—Will you fly a kite tomorrow?
—Yes,____.
如图所示,当S1、S2断开时,能亮的灯是____ ,它们是____ 联的;当S1、S2闭合时,能亮的灯是____ ,它们是____ 联的;当S1闭合,S2断开时,能亮的灯是____ .
He ____(瞥一眼) at the envelope and recognized his uncle's handwriting.